Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Effecting temperature change
Patent
1995-11-03
1997-11-11
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Disparate treatment of article subsequent to working,...
Effecting temperature change
264 82, 264DIG43, 264235, 264345, 501141, C04B 3330
Patent
active
056860374
ABSTRACT:
This invention relates to a novel ceramic mass or material and the use of same in the building materials industry for manufacturing bricks, ceramic stones, roofing tiles, large block and the like. A formable ceramic mass is prepared by mixing clay, a filler such as sand, calcium hydroxide, which can be in the form of slaked lime, and an aqueous solution of solidification activating agent. The formable mass is then shaped, e.g. by plastic moulding into uncured building elements which are in turn subjected to heat treatment, including a preliminary drying, a thermal treatment in a saturated vapour atmosphere, and a subsequent further heating and drying with a gradual lowering of moisture content. The preliminary drying is carried out at a temperature of 60.degree.-70.degree. C. to reduce the moisture content to 12-14%. The thermal treatment is performed at a temperature of 95.degree.-100.degree. C. for 2-4 hours, and the final heating and drying step is performed during 8-10 hours by means of a gradual raising of temperature to 120.degree.-130.degree. C. and maintaining to this temperature while reducing the relative humidity of the surrounding air. The dry components content of the raw or uncured ceramic mass or material, is in the following limits, % wt: sand 0.1-50.0; calcium hydroxide 4.5-20.0; solidification activating agent 0.3-4.0; and clay constituting the balance.
REFERENCES:
patent: 1666936 (1928-04-01), Kevn
patent: 4048276 (1977-09-01), Hansen
Zorokhovitch V.C. et al, Manufacturing of Bricks, Styroyizdat Publishers, Leningrad, 1988, pp. 6-8.
Komkov Semyon K.
Ryabinky Semyon A.
Derrington James
Express-Ceramica Ltd.
Klotz Trevor C.
LandOfFree
Method and raw ceramic mass for manufacturing building elements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and raw ceramic mass for manufacturing building elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and raw ceramic mass for manufacturing building elements will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1226347